Stove



-T. A. DOUGHTY.

STOVE.

APPLICATION FILED JUNE 4. 1919.

1,402,924, Patented Jan. 10, 1922.

3 SHEETS-SHEET I T. A. nousmv.

STOVE. APPLICATION FILED JUNE 4- I919- Patented Jan. 10, 1922.

zzeadom amyw T. A. DOUGHTY.

STOVE.

APPLICATION FILED JUNE 4.1919.

Patented Jan. 10, 1922.

3 SHEETS-SHEET 3.

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STOVE.

Specification of Later s Fatent.

err

nonrnanenorae Application fiieaaune 4, 191-9. Serial No. 301,612.

To all whom it may co oewe I Be it known that I, Tiinononn A. DoUoHri', a citizen of the United States, and a resident of Fargo, in the county of Cass, State of l\ orth-Dakota have invented certain new and useful Improvements in Stoves, of which the following is a specification.

My inventionrelates to stoves and furnacesand covers improved features of construction arrangement and operation.

Among the important objects of my invention are: to provide improved construction and arrangementwhich will give a very l.arge radiati11g surface in a stove of comparatively small size: to provide construction and arrangement which will enable the passage of air in intimate contact with such large radiating surface; to provide construc tion and arrangement whichwill produce a long path for the hot gases and sufficient retardation and checking of the flow to give the air flowinothrough the stove ample time to take on the heat from theflowing gases; to provide construction andarrangement which will cause uniform distribution of the gases throughout their path and to prevent concentration thereof at any point, and also to, effect uniform distribution of theair so thatthe air can most efiiciently come into contact with the heat, and the greatest heating efficiency result; and in general to provide construction, arrange ment and operation in a stove or furnace which will efficiently heat a large volume of air with comparatively small fuel consumption.

The variousfeatures of my invention are clearly disclosed on the accompanyingdrawings in wh'ich- Fig. l. is a plan view with parts broken away,

Fig. broken away,

Fig. 3 is a sectional view on plane 3 3, Fig. 1,

Fig. 1- is a sectional view on plane 4l-4, a a

Fig. 5 is, a sectional view on plane 55,

Fig. 3, and V k Fig. 6 is a sectional view on plane 646, Fig. 8. c a

The stove shown has a rectangular body formed by the front and rear sheet metal walls 10 and 11, theside walls 12 and 13, and the top and bottom walls 14 and -15. A

2 is a rear elevational view with parts per 7 Fig-{5 the top walls of the fire box side plates vertical partition 16 substantially bisects the stove body and extends between the side walls and the top and bottom walls. Bee tween the partition and the front wall 10 the fire box 17 is supported a distance above the bottom to leave the ash pit 18. Above the fire box is the combustion space 19 to which leads the fuel charging chute 20 normally'closed by a door 21, the chute being secured to the front wall 10. The fire box is'composed of side walls 22 and 23 and front and rear walls 24- and 25 respectively, the walls being preferably formed of plates having spacingribs 2% extending vertically and having air slots or passageways 25 therethrough. The ribs space the Walls from the walls of thestove to leave heat insulating air space, and the slots 25' are open at their lower ends to the'ash pit and at their inner sides communicate with the interior of the fire b-oX. v

The stove body is supported by hollow frontcorner posts 26 "and 27 and by rear corner posts 28 and 29, the posts at their upper ends being closed whiletheir lower ends terminate in expanded or hell shaped feet. or bases '30. Each of the front corner posts has near its upper end an air inlet opening 31 controlled by a slide or damper 32 At their lower ends each post communicates with the ashpit through a passageway 33 as clearly shown in Fi {15.3, 4 and 5. The posts shown are cylindrical but only three-quarters round in order that they may receive the respective corners of the stove as clearly shown in Fig. 1. Air to be heated enters through the openings 31. and flows down through the front posts and intothe ash pit, and from there through the slots 25 laterally into the fire box} The fire box sides are shown crowned by a rectangular frame 34 forming the blast compartment 35 from which tuyere openings 36 end of the fire box.

lead into the up- As best shown in have the openings 37 through which air may enter from he ash pit and flow through the tuyeres 36. At the bottom of the fire boX is the grate 38 Through the slots 25' and the tuyeres 36 adequate air supply is provided for the fuel in the fire box; and if. there is an effective chimney suction the air will'be forcedinto the firebox in the form of a blast and intense heat willresult.

tin.

manta am. is, 192.

y I Between the partition 16and the rear-Wall 11 ofthe stove body, upper and lower a trans; I

verse partitions 39 and 40 extend, these artitions at their sidesterminating at an .be-

7 ing connected by the vertical walls 41 and 42 as clearly shown in Figs. 2 and 6. Extend. ing between the partitions are a number of intermediate vertical walls 43 which subdivide the space between the walls 41 and 42 into vertical passageways 44 and 45. At their lower endsthe passageways 45,.communicate with theexterior of the stove by ver-- tical openings 46 cut in the rear wall 11 of thestove. At their upper ends the passage-.

ways 44 communicate with the openings 47 cut in the partition 16. Inserted in the space above the fire box are the sheet metal elbow structures 48 which registerv at their inner ends with the respective passageways 47 and which at their upper ends register with the openings 49 in the top wall 14 of the stove. These elbow members together with the passageways 44101111 paths diagonally through the stove for air to be heated;

The elbowv members 48 are spaced apart distances equal substantially to the width of the passageways heretofore referredjtor space communicates at. its sides with theverticalside passageways'53 and 54 between the stove'sides .12 and 13 and the intermediate walls 41 and 42 respectively. The passageways 53 and 54 communicate at their upper ends with thespace 55 above the top partition 89,.which space communicates with the chimney 56 through the opening 57.. The:

chimney'outletis in the center of the rear se'tion of thestove and the products of combustion andhot gases flowing into the space 52 from the passageways 45 deflect and flow laterally in the space 52 dividing evenly, halfgoing to one side and half to the other,

and then upwardly through the passageways 53 and 54, then through the space 55, uniting, and then flowing into the chimney. Thespacesbetween the elbowmembers 48 and the vertical passageways 45 together with the passageways 53 and 54 causeithe' gasesand produ ts of combustion to be uniformly distributed in their flow through the I stove and prevent concentration thereof. .The walls formlng these various passageways offer a large amount of heating and radiating surfaceto the air which flows through the passageways 44 and the elbow members 48 so that air is rapidly and efiiciently heated during its circulation through the stove.

As the gases,.smoi-:e and other products oi combustion ap )roach the stove outlet'to the l chimney, they will tend to concentrate into compact streams in order to quickly reach the outlet. This, of course, would prevent a considerable amount o1 heat from being extracted from the gases, and to prevent such concentration and toretard andrestrict the flow of the gases 1 provide the vertical baffle plates 58 and 59 at the ends of the pan tit-ion 39, these battle plates terminating shorter" the topwall 14 oi the stove. In the outlet opening 57 to the chimney I insert an annular sheet metal baffle frame 60 which extends downwardly substantially to the level of the upper ends or the baiile plates and 59. The circumference of theannular battle frame is equal to the combined length of the baille plates 58 and 59 which extend between the rearrwall 11 of the stove and the partition 16. When the gases reach the baffle plates they are retarded and after passin over the tops of the bafile plates they must dip in order to enter theannular balile frame. The arrangement causes the gases space. 55 and concentration intostreams is prevented, v maximum heating 'ing theretpre obtained. 7 I provide a more dire-"t path for the out going hot gases and products'of combustion when. starting fire, or the fire is low. In the upper partition 39 the escape openings 61 are provided above andin registration with the passageway 45. A slide damper 62 controlled by a stein 63 extending to the exterior of the stove, is provided for opening or closing the passageways 61.' When fire is started the damper is shifted to open the passageways so that the products of combustion can flow directly into the space 55 and to the chimney; After the fire is under way, the damper is shifted to close the passageways and then the gases will have to take the round about circuitous way 1 before-mentioned to reach the chimney.

The rear corner posts 28 and 29 form ventilating structures for the flew of'air from near the floor, 1nto the stove. As.

shown the bases of these posts have eachan inlet opening 64 controlled by. a slide 65, and at the upper end each post has the passageways 66, these passageways connecting the posts with the passageways 53 and. 54 respe tively, the foul air from near the floor being then carried upwardly into thestove and out at the'chimney.

' In order that the chamber 52 may be cleaned of soot or other collected material, a door 67 is provided. A door 68 is also provided through which the ash pit 18 may be cleaned. 69 represents adoor giving access.

elliciency be- 7 'to flow'with even distribution through the to the combustion chamber 19 below the hop er 20. g

It y improved stove can be readily con sti'ucted of sheet iron or partly sheet iron and casting. Its design is so simple that it can be inexpensively constructed. By virtue of the numerous distributing passageways for the hot gases and the air, and the up and down path sections for the gases, and the various retarding and deflecting means, a large heating surface is presentedv and a very large volume of air can be quickly heated in the most efiicient manner and with minimum fuel consumption. The air inlet openings 46 and the air outlet openings 49 communi cate with the room in which the stove is placed.

As changes and modifications in the construction, arrangement and operation are possible which could still come within the scope of my invention, I do not desire to be limited to the precise construction, arrangement and operation shown and described, but having described my invention I desire to secure the following claims for Letters Patent,

1. In a stove, the combination of the outer walls, a vertical partition dividing the stove into a front part and a rear part, a fire box in the front part, vertical passageways in the rear part communicating at their upper ends with the front part, side passageways in the stove communicating with the lower ends of said vertical passageways, a chimney communicating with the upper ends of said side passageways, and air passageways extending through said stove betweenv said vertical passageways, said air passageways being open at their lower ends to the exteriorof the stove and at theirupper ends adapted to charge heated air into the room in which the stove is placed.

2. In a store, the combination of the stove body, a partition dividing said body into front and rear compartments. :1 fire pot atthe lower part of said front compartment, a chimney outlet at the upper end of the rear compartment, means for admitting airinto the front compartment below said lire pot. down draft passagewavs at the central part of said rear compartment and up draftside passageways in said compartment, said down draft passageways connecting with said front compartment at'the upper part thereof and at the lower ends with said up draftpassageways and said up draft side passageways communicating with the chimney outlet.

3. In a stove, the combination of the stove body, a partition dividing said body into front and rear compartments, a fire pot at the lower end of said front compartment, means for conducting air to said fire pot from the exterior of the stove, a chimney outlet at the upper end of said rear compartment, down draft passageways at the central part of the rear compartment, up draft side passageways in said compartment, said down draft passageways communicating at their upper ends with the front compartment near the top thereof and at the lower ends with'said up draft passageways and said up draft side passageways communicating at their upper ends with said chimney outlet, and air passageways alternating with s; id down draft passageways, said air passageways havingtheir lower inlet ends near the bottom of the stove and their upper outlet ends at the top of the stove.

i. In a stove, the combination of the stove body, a fire pot at the lower part of said body, means for on( lucting air into said fire pot, a chimney outlet at the top of said body, down draft passageways and side up draft passageways in said body, said downdraft passageways receiving the products of com bustion at their upper ends and communicating attheirlower ends with said up draft side passageways, said side passageways communicating at their upper ends with the chimney outlet, and air passageways eX- tending through said body from the bottom to the top thereof, for the upward flow of air to be heated, said air passageways being in intimate contact with said down draft passageways.

5. In a stove, the combination of a stove body, a partition dividing said body into front and rear compartments, a fire pot at the lower end of said front compartment, a horizontal row of openings in said partition near the top thereof, down draft passageways at the central part of said rear compartment connecting at their upper ends with said openings in said partition, up draft passageways at the sides of said rear compartment connecting at their lower ends with the lower ends of said down draft passageways, a chimney outlet at the upper end of said rear compartment, said side passageways'at their upper ends communicating with said chimney outlet, a second horizontal row of openings through said partition, air passageways alternating with said down draft passageways and communicating at their upper ends with said openings of the second row and at their lower ends communicating with the stove exterior, and ducts connecting the openings of said second row with the upper end of said front com partment, said ducts being spaced apart for the flow of products of combustion from said front compartment into saidydown draft passageways.

6. In a stove, the combination of a rectangular body, a partition dividing said body into front and rear compartments, a fire pot in the front compartment near the b'ottomth'ereof, an ash pit below the firepct,

means for feeding air into saidash pit, air

passageways from said ash pit into said fire pot, vertical walls in said rear compartment forming a iarizontal row of vertical pa sageways, said passageways constituting alternate; down draft passageways and air passageways, openings in said partition con necting with the upper ends of said down draft passageways for the entrance of products of combustion from said front compart ment, said down draft passageways being open at their lower ends, sidenp draft passageways in said rear compartment communicating at their lower ends with said down draft passageways, a chimney outlet in the upper end of said rear compartment,

said up draft passageways communicating with said chimney outlet, said air passage ways being open at their lower ends to the exterior of the stove for the entrance of air, other openings in said partition, and ducts extending through the upper part of said front compartment and communicating at their inner ends with saidother openings and at their upper ends withthe stoveeX terior.

7. In a stove, the combination of walls forming the stove body, a fire pot at the lower part of said body and a combustion chamber above said fire pot, a transverse partition nearthe upper end of said body, walls extending downwardly from said partition and forming vertical passageways, said passageways being open at their upper ends to said combustion chamber, side up draft passageways communicating at their lower ends with said down draft passageways and communicating at their upper ends with the space above said partition, an outlet in the top of said stove above said partition adapted for connection with a chimney, said partition wall having openings communicating with said down-draft passageways, and a damper for opening or closing said openings, said openings when open permitting direct flow of the products of combustion from said combustion chamber into the space above said partition and to the chimney.

8. In a stove, the combination of'outer walls forming the stove body, a partition dividing said body into front and rear compartments, a fire pot in the front compartment near the bottom thereof, thespace in said front compartment above said fire pot forming a combustion chamber, a transverse partition wall near the upper part of said rear compartment, walls extending down wardly from said transverse partition forming a row of down draft passageways, there being openings through said vertical partition connecting said combustion chamber lower-tends of said down draft passageways with the space above said transversepartition, there being an outlet in thetop wall of said stove above saidtransverse'partition, and air passageways sandwiched between said down' draft passageways, said air passageways being open for the upward flow of air therethrough.

9. In a stove, the combination of the stove body, a tire pot at the lower part of said body, a transverse partition near the top of said body, walls extending downwardly from said partition and forming aplurality of downdraft passageways, said passageways at their upper ends communicating with-the spaceabove the fire pot to receive the products of combustion, side up draft passageways connecting the lower ends of said down draft passageways with the space above said transverse partition, an outlet to the chimney in the top wall ofthe stove above said partition, baflie plates extending upwardly from the sides of the partition to be in the path of the flow of gases from the up draft passageways to the space above the partitiomand an annular deflecting frame in said outlet extending-downwardly toward said partition, sa d baffle frame cooperating i with said baffle plates to spreadand distribute the gases in' their flow through the space above said partition and toward the outlet."

10. In a stove, the combination of a stove body, a vertical partition dividing said body'into. front and rear compartments, a

fire pot atthe lower part of the front com- I partm'ent, the space above the fire pot forming a combustion chamber, means for supplying fresh air to said fire pot, a transverse partition near the upper end of said rear compartment, walls extending clownwardly from said transverse partition to form a horizontalrow of down draft-pas sageways terminating a distance short of the bottom of the stove, said passageways at their upper ends communicating with the combustion chamber to receive the products of combustion, up draft passageways at the sides of the rear compartment communicating at their lower ends with the space below the down draft passageways and communicating at their upper ends with the space above said transverse partition, an outlet to the chimney in the top of the stove above said transverse partition, baffle plates extending upwardly from the sides of said transverse partition to be in the path of gases flowing from saidup draft passageways into the space above said transverse partition, an annular baffle frame extending through said outlet opening a distance downwardly into the space above said transverse partition, sa d annular baffle wall co-operating with said baffle plates to deflect and distribute the gases to cause uniform flow thereof through said space above the transverse partition.

11. In a stove, the combination of a rectangular body, a vertical partition dividing said body into front and rear compartments, a fire pot at the lower part of the front compartment, the space above the fire pot forming a combustion chamber, means for feeding fresh air into said fire pot, a transverse partition near the upper part of the rear compartment, walls extending downwardly from said partition to within a short distance of the stove bottom, said walls forming vertical down draft passageways, said passa geways communicating at their upper ends said transverse partition, said. bafile plates being in the path of gases flowing from the up draft passageways into the space above said transverse partition and causing the gases to dip before they can enter the outlet passageway, said annular baffle frame having a circumference equal substantially to the combined length of the baiile plates and co-operating with the bafiie plates to spread and uniformly distribute the gases in their flow through the space above said transverse partition.

12. In a stove, the combination of a rectangular body, a fire pot at the lower part of said body, means for feeding fresh air into said fire pot, a transverse partition near the upper end of said body, an outlet in the top of the stove above said transverse partition, bafile plates at the sides of said transverse partition extending upwardly into the space above said partition, an an nular ballle wall extending downwardly from said outlet opening, the circumference of said annular baiile wall being substantially equal to the combined length of said bafiie plates, said baffle wall and plates cooperating to distribute and spread out the flow of gases through the space above said transverse partition.

13. In a stove, the combination of a stove body formed so as to provide two compartments, a fire box in one of said compart ments, a duct extending diagonally upwardy across said compartments through the stove body for the passage of air, said duct being open at both ends and terminatingabove said the box, a chimney, a passageway between the second mentioned compartment and the chimney whereby the products of combustion pass upwardly in the first mentioned compartment first into contact with the upper end of said duct, then along said duct into the second mentioneocompartment and thence to the chimney.

14. In a stove, the combination of a stove body formed so as to provide two compare ments, a fire box in one of said compartments, a plurality of ducts extending through said stove body from the lower por tlon of the other compartment to the upper urtion of the in; mentioned compartment n atboth ends for the upward passage of air, the upper portions of said ducts being above said tire box, achimney, means estab lishing communication between the lower portion of said second mentioned compartment and the chimney, whereby the products of combustion pass upwardly in the first mentioned compartment into contact with the upper ends of said ducts, downwardly in the second-mei ioned compartment between the ducts and thence t the chimney.

15. In a st ve, the combination of a stove body formed so asto provide two compartments, at fire box in one of said compartments, a plurality of ducts extending through said stove body from the lower :portion of the other compartment to the upper portion of the first mentioned compartment open at both ends for the upward passage of air, the upper portions of said ducts being above said fire box, a chimney extending from the upper portion of the second mentioned compartment,passageways extending along the outer walls from the lower portion of the second mentioned compartment to said chimney, whereby the products of combustion pass upwardly into the first mentioned compartment into con tact with the upper ends of said ducts, downwardly in the second mentioned com partment between the ducts and thence upwardly through said passageways to the chimney. I

16. in a stove, the combination of astove body, a vertical partition dividing said body into two compartments, a fire box in one of saidcompartments, a plurality of ducts extending diagonally upwardly across said compartments through the stove body for the passage of air, said ducts being open at both ends, the upper ends of said ducts exbody, a fire pot at the lower part of said body, a transverse partition near the top of said: body, walls extending downwardly from said'partition and forming a plurality of down draft passageways, said passageways at their upper ends communicating with the space above the fire pot to receive the products of combustion, side up draft passageways connecting the lower ends of said downdraft passageways with the space above said transverse partition, an outlet to the chimney in the top wall of the stove above said partition, baflle plates ext-ending upwardly from the sides of the partition to the space above the fire pot forming a combustion'chamber, means for supplying fresh air to said fire pot, a transverse partition near the upper end of said rear compartment, walls extending downwardly from said transverse partition to form a horizontal row of down draft passageways terminating a distance short of the bottom of the stove, said'passageways at their upper ends communicating with the combustion chamher to receive the products of combustion, updraft passageways at the sides of the rear compartment communicating at their lowerends with thespace below the down draft passageways and communicating at their upper ends with the space above said transverse partition, an outlet to the chimney in the top of the stove above said trans verse partition, baffle plates extending up-' wardly from the sides of said transverse partition to be in the path of gases flowing from said up draft passageways into the space above said transverse'partition, a deflector in the space above said transverse partition, said deflector cooperating with said baflie plates to deflect and distribute the gases to cause uniform fiowfthereof through said space above the transverse partition.

In witness whereof, I hereunto subscribe my name this 31st day of N[a.y,A; .D., 1919.

THEODORE A. DOUGHTY. 

